Grease-cup.



PATENTED AUG. 27, 1907.

J. J. AULL.

GREASE CUP.

APPLICATION FILED FEB. a, 1907.

, To all whom it may concern:

UNITED STATES PATENT OFFICE;

, JEROME JAMES AULL, or CINCINNATI, OHIO, ASSIGNOR TOITHE LUNKENHEIMER 00., F

7 CINCINNATLOHIO. I

sashes-our.

. Nois'e4,147.

Specification of Letters Patent.

Patented Au 27, ieo'r.

Application filed February a, 1907. Serial No 866,469.

Be it known that I, JEROME JAMES AULL, a citizen of the United States, residing at Cincinnati, Ohio, have invented certain new and useful Improvements in Grease-Cups, of which the following is a'speci-fication.

My invention relates to improvements inlubricators of the type known'as grease cups.

"scribed and particularly set forth in the appended claims.'

An embodiment of the invention is illustrated in the accompanying drawing, in which, i

. Figure l is a side elevation 2 is a sectional view.

In this drawing, the numeral 1 indicates the body ofthe cup which is closed at its lower end, except for the delivery opening 2 through which the grease is forced to the lubricator bearing. A threaded nipple 3 which extends irom the bottom of the cup, and through which the delivery opening passes, serves as a convenient meansior securing the cup to the bearing member, the

' lower portion of the body of the cupbeing preferably provided with a'polygonal shaped flange 4 for the application of a wrench or like tool, by which the cup may be attached or removed.

The cup is open at its upper end and is provided on its interior wall with screw threads as shown at 5 which are engaged by a plun'ger'fi which bars a stem 7 and suitable operating handleS. By this latter, after the cup has been filled with grease, the plungermay be screwed down at suitable intervals to force the grease through the delivery opening.

In order to exclude all dust and dirt from the clip, .a

cap 9 is provided which has a central opening 10 through which the stem of the plunger passes, and this cap is provided with a spring or yielding annularflange 11 which is designed to irictionally engage the upper end of the cup and thereby retain the cap in place.

I prefer toprovide the cup near its upper end with an annular head 12 and the spring flange of the'cap with a corresponding internal groove '13, this flange being slotted or split at certain intervals, as indicated at 14 to permit it to yield the more readily as it is being sprunginto place. A cap so constructed may be very easily sprung into engagement with the cup and when so applied will be securelyheld against all danger of accidental displacement and will effect a tight closure, but would be exceedingly diflicult to remove by the fingers albne. It will be noticed however that I extend the threads on the interior of the cup clear to the upper edge; thus when it is desired to remove the cap all that it is necessary to'do is to continue to unscrew the plunger until it bears against the interior of the cup and further unscrewing thereof will cause the cap to be sprung out of engageihentwith the bead.

whereupon it can be removed withthe plunger for the refilling oi the cup. When the cup has been filled the plunger is screwed in until its upper face is just below the upper edge of the cap when the cap may be again readily sprung into engagement with the retaining bead.

what I claim is:- I g 1. A grease cup comprising a body having a filling opening at one end and a delivery openlng at the opposite end, a cap having a frictional engagement with the filling end of the body, a plunger within the body, and means whereby said plunger may be moved in one dlrectionto expel the grease and in the opposite direction to removethe cap, substantially as described 2. A grease cup comprising an infidel-1y; threaded body open at one end and having a delivery orifice at the opposite end, a yielding cap having a spring lock' engagement with said head, and a. threaded plunger fitting the threads in the body and having a stem extending through an opening in the cap, said plunger having its inner face adapted .tor expelling the grease on movement in one direction and its upper face adapted for contact with the inner face of the cap in the opposite direction whereby said cap may be removed by the plunger.

In testimony whereof, I afllx my signature in presence of two witnesses.

JEROME JAMES AULL.

Witnesses:

Howano Evan's, SAun'Mornn.

Having thus described the'nature of my invention, 

